Nouns

(n)companyan institution created to conduct business“he only invests in large well-established companies”, “he started the company in his garage”
(n)companysmall military unit; usually two or three platoons
(n)company, companionship, fellowship, societythe state of being with someone“he missed their company”, “he enjoyed the society of his friends”
(n)company, troupeorganization of performers and associated personnel (especially theatrical)“the traveling company all stayed at the same hotel”
(n)caller, companya social or business visitor“the room was a mess because he hadn't expected company”
(n)companya social gathering of guests or companions“the house was filled with company when I arrived”
(n)party, companya band of people associated temporarily in some activity“they organized a party to search for food”, “the company of cooks walked into the kitchen”
(n)ship's company, companycrew of a ship including the officers; the whole force or personnel of a ship
(n)companya unit of firefighters including their equipment“a hook-and-ladder company”

Verbs

(v)company, companion, accompany, keep companybe a companion to somebody